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Finding the Fourth Proportional to 219,042.63, 328,513.73 and 61,287.03

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Solution

The fourth proportional to 219,042.63, 328,513.73 and 61,287.03 is: 91,916.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,042.63 : 328,513.73 = 61,287.03 : x
  2. Step 2: Convert to fraction form
    219,042.63/328,513.73 = 61,287.03/x
  3. Step 3: Cross multiply
    219,042.63x = 328,513.73 × 61,287.03
  4. Step 4: Simplify right side
    219,042.63x = 20,133,630,519.49
  5. Step 5: Solve for x
    x = 20,133,630,519.49/219,042.63
  6. Step 6: Final answer
    x = 91,916.49

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.